Session: 04-09 Combustion Experiments
Paper Number: 128618
128618 - Numerical Simulation and Experimental Study of a Full-Scale Mild Combustion Chamber
Over the past four decades, gas turbine combustion has been dedicated to achieving low emissions, resulting in numerous advancements in combustion technologies. MILD combustion, a relatively promising new technology with unique characteristics, has garnered extensive research and attention in the last twenty years. However, applying MILD combustion to gas turbines remains a significant challenge due to limited space and high heat release rates per unit. Currently, most MILD combustion experiments are conducted on a laboratory scale. To address this issue, we conducted full-scale MILD combustion experiments under pressure test conditions in this study. NOx data were obtained at different outlet temperatures (1473 K-1773 K) under experimental conditions of 1.5 bar pressure and air inlet temperature at about 423K and 510K. These results were compared with previous lab-scale research data. The findings indicate that while the NOx emission data for full-scale experiments increased relative to lab-scale studies, it still remained below 10 ppm@15%O2 during operating conditions, demonstrating the low NOx emission potential of MILD combustion. This outcome can be attributed primarily to the adiabatic state of the full-scale combustion chamber's process and relatively poor mixing effects between fuel and air as well as flue gas and unburned reactants due to size enlargement. These findings have significant implications for designing full-scale MILD combustion chambers in gas turbine engines.
Presenting Author: Yali Ben Institute of Engineering Thermophysics, Chinese Academy of Sciences
Presenting Author Biography: Yali Ben is a M.E. student of Institute of Engineering Thermophysics (Chinese Academy of Sciences).The objectives of her research are (i) to investigate the mechanism of thermoacoustic oscillations in multi-nozzle array combustor and MILD combustor, (ii) to study the prediction of thermocoustic oscillations frequencies and amplitudes as well as measures for controlling thermocoustic oscillations, (iii) to investigate the low emission combustion technology of multi-nozzle array combustor and MILD combustor.
She has B.E. degree from Zhejiang University. She speaks Chinese and English.If you are interested in her research topics, please feel free to contact her via email: benyali@iet.cn.
Authors:
Yan Xiong Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics (IET), Chinese Academy of Sciences (CAS); University of Chinese Academy of Sciences; Jiangsu Zhongke Research Center for Clean Energy and PowerYali Ben Institute of Engineering Thermophysics, Chinese Academy of Sciences
Ningjing Yang Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics (IET), Chinese Academy of Sciences (CAS); University of Chinese Academy of Sciences
Zhigang Liu Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics, Chinese Academy of Sciences; Jiangsu Zhongke Research Center for Clean Energy and Power
Zhedian Zhang Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics (IET), Chinese Academy of Sciences (CAS); University of Chinese Academy of Sciences; Jiangsu Zhongke Research Center for Clean Energy and Power
Weiwei Shao Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics (IET), Chinese Academy of Sciences (CAS); University of Chinese Academy of Sciences; Jiangsu Zhongke Research Center for Clean Energy and Power
Xiang Xu Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics (IET), Chinese Academy of Sciences (CAS); University of Chinese Academy of Sciences; Jiangsu Zhongke Research Center for Clean Energy and Power
Numerical Simulation and Experimental Study of a Full-Scale Mild Combustion Chamber
Paper Type
Technical Paper Publication